CRC-8 -CCITT ASM 12 周期 149 字节

//CRC位域4表(小端):

const unsigned char CRCR8_8C_Table[16] = {

  0x00,0x9D,0x23,0xBE,0x46,0xDB,0x65,0xF8,0x8C,0x11,0xAF,0x32,0xCA,0x57,0xE9,0x74

};

//CRC位域4查表算法(小端):

unsigned char GetCRCR8_8C_00_00_Table(unsigned char *crcBuff, unsigned char crcLen) {

unsigned char i;

unsigned char crc = 0x00;

unsigned char crcTemp;

  for(i = 0; i < (crcLen * 2); i ++) {

    if (i & 1) crcTemp = crcBuff[i >> 1] >> 4;

    else crcTemp = crcBuff[i >> 1] & 0x0F;

    crc = (crc >> 4) ^ CRCR8_8C_Table[(crc & 0x0F) ^ crcTemp];

  }

  return crc;

}

void main() {

const unsigned char dataTable[] = "\x01\x23\x45\x67\x89\xAB\xCD\xEF";

unsigned char crc;

  crc = GetCRCR8_8C_00_00_Table((unsigned char *)dataTable, sizeof(dataTable) - 1);

  while(1);

}

//CRC位域8表(小端):

const unsigned char CRCR8_8C_Table[256] = {

  0x00,0x5E,0xBC,0xE2,0x61,0x3F,0xDD,0x83,0xC2,0x9C,0x7E,0x20,0xA3,0xFD,0x1F,0x41,

  0x9D,0xC3,0x21,0x7F,0xFC,0xA2,0x40,0x1E,0x5F,0x01,0xE3,0xBD,0x3E,0x60,0x82,0xDC,

  0x23,0x7D,0x9F,0xC1,0x42,0x1C,0xFE,0xA0,0xE1,0xBF,0x5D,0x03,0x80,0xDE,0x3C,0x62,

  0xBE,0xE0,0x02,0x5C,0xDF,0x81,0x63,0x3D,0x7C,0x22,0xC0,0x9E,0x1D,0x43,0xA1,0xFF,

  0x46,0x18,0xFA,0xA4,0x27,0x79,0x9B,0xC5,0x84,0xDA,0x38,0x66,0xE5,0xBB,0x59,0x07,

  0xDB,0x85,0x67,0x39,0xBA,0xE4,0x06,0x58,0x19,0x47,0xA5,0xFB,0x78,0x26,0xC4,0x9A,

  0x65,0x3B,0xD9,0x87,0x04,0x5A,0xB8,0xE6,0xA7,0xF9,0x1B,0x45,0xC6,0x98,0x7A,0x24,

  0xF8,0xA6,0x44,0x1A,0x99,0xC7,0x25,0x7B,0x3A,0x64,0x86,0xD8,0x5B,0x05,0xE7,0xB9,

  0x8C,0xD2,0x30,0x6E,0xED,0xB3,0x51,0x0F,0x4E,0x10,0xF2,0xAC,0x2F,0x71,0x93,0xCD,

  0x11,0x4F,0xAD,0xF3,0x70,0x2E,0xCC,0x92,0xD3,0x8D,0x6F,0x31,0xB2,0xEC,0x0E,0x50,

  0xAF,0xF1,0x13,0x4D,0xCE,0x90,0x72,0x2C,0x6D,0x33,0xD1,0x8F,0x0C,0x52,0xB0,0xEE,

  0x32,0x6C,0x8E,0xD0,0x53,0x0D,0xEF,0xB1,0xF0,0xAE,0x4C,0x12,0x91,0xCF,0x2D,0x73,

  0xCA,0x94,0x76,0x28,0xAB,0xF5,0x17,0x49,0x08,0x56,0xB4,0xEA,0x69,0x37,0xD5,0x8B,

  0x57,0x09,0xEB,0xB5,0x36,0x68,0x8A,0xD4,0x95,0xCB,0x29,0x77,0xF4,0xAA,0x48,0x16,

  0xE9,0xB7,0x55,0x0B,0x88,0xD6,0x34,0x6A,0x2B,0x75,0x97,0xC9,0x4A,0x14,0xF6,0xA8,

  0x74,0x2A,0xC8,0x96,0x15,0x4B,0xA9,0xF7,0xB6,0xE8,0x0A,0x54,0xD7,0x89,0x6B,0x35

};

//CRC位域8查表算法(小端):

unsigned char GetCRCR8_8C_00_00_Table(unsigned char *crcBuff, unsigned char crcLen) {

unsigned char i;

unsigned char crc = 0x00;

  for(i = 0; i < crcLen; i ++) {

    crc = CRCR8_8C_Table[crc ^ crcBuff[i]];

  }

  return crc;

}

void main() {

const unsigned char dataTable[] = "\x01\x23\x45\x67\x89\xAB\xCD\xEF";

unsigned char crc;

  crc = GetCRCR8_8C_00_00_Table((unsigned char *)dataTable, sizeof(dataTable) - 1);

  while(1);

}